Fix setting isBundle:false on macOS in config-ui.qbs
Fix setting isBundle:false on macOS in config-ui.qbs

Despite the fact that the second Properties item is not evaluated on
macOS, this "works" because isBundle is set to undefined (which is
false) due to a bug with Properties. Set isBundle:false explicitly for
macOS as well.

This amends 1eff548646

Change-Id: Ifd5bc3b656a0eff02914e4fe43945b0e8b0f04fe
Reviewed-by: Christian Kandeler <3aa99dcdd3f0cac61fb81c2a11771c0cc2497607@qt.io>

qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qt-labs/qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs,qtproject/qt-labs-qbs